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Wright State University Celebration Of Research, Scholarship And Creative Activities 2010 Book Of Abstracts, Wright State University Office Of Undergraduate Research And Stemm Activities

Celebration of Undergraduate & Graduate Research, Scholarship, and Creative Activities Materials

The student abstract booklet is a compilation of abstracts from students' oral and poster presentations at Wright State University's inaugural Celebration of Research, Scholarship and Creative Activities on April 16, 2010.

Computer Simulation To Manage Lean Manufacturing Systems, Ahmed Deif

Industrial Technology and Packaging

There is a difference between a lean manufacturing system and a manufacturing system that just applies lean techniques. This paper addresses the previous statement through using computer simulation to explore the impact of applying just in time lean policy on a traditional inventory based production system. A system dynamics model is introduced to capture the different components of the production system. The inventory dynamics of the modeled system is examined against different production scenarios under stochastic demand. Results showed that in systems that are not fully transferred to lean, adopting lean principles are not always beneficial. The paper suggests some …

Polarized Light Based Scheme To Monitor Column Performance In A Continuous Foam Fractionation Column, Janakiraman N. Swamy, Czarena L. Crofcheck, M.P. Mengüç

Biosystems and Agricultural Engineering Faculty Publications

BACKGROUND: A polarized light scattering technique was used to monitor the performance of a continuously operated foam fractionation process. The S11 and S12 parameters, elements of the light scattering matrix, combined together (S11+S12) have been correlated with the bubble size and liquid content for the case of a freely draining foam. The performance of a foam fractionation column is known to have a strong dependence on the bubble size distribution and liquid hold up in foam. In this study the enrichment is used as a metric, representative of foam properties and column performance, and correlated to the S11+S12 parameter.

RESULTS: …

Passive Fuzzy Controller Design For Perturbed Nonlinear Drum-Boiler System With Multiplicative Noise, Cheung-Chieh Ku, Pei-Hwa Huang, Wen-Jer Chang

Journal of Marine Science and Technology–Taiwan

The port choice in the multiple-ports region is one of important issues in the international trade container transportation system. In order to reduce the total transportation cost, it is very important for shipping carriers to choose an optimal port for callings. The aim of this paper is to construct an Analytic Hierarchy Process (AHP) model for simulating the behaviors of carriers’ port choice and identifying the importance weight of every influential factor influencing carriers’ port choices in the multiple-ports region. Finally, the utilization of this proposed AHP model is demonstrated with a case of five shipping companies. By the AHP …

On The Performance Of Rough Inclined Stepped Composite Bearings With Micropolar Fluid, Neminath Bhujappa Naduvinamani, Siddangouda Apparao

Journal of Marine Science and Technology–Taiwan

This research utilizes two kinds of materials to fabricate the ideal shape of microneedles, polymer microneedles and silicon microneedles, with 236 µm and 350 µm in height respectively. First, we utilize the turning model technique to fabricate the polymer microneedles. The silicon wafer with V-groove is used as the model and the SU-8 2050 is the main material of microneedles. In addition, we also use the silicon as the material and adopt the wet-etching technology to make the silicon microneedles. By the characteristics of anisotropic etching and undercut, the silicon wafer will have the fast-etching plane and form the shape …

Investigation Of Creep Threshold Stresses Using In Situ Tem Straining Experiment In An Al-5y2o3-10sic Composite, S. P. Deshmukh, Rajiv S. Mishra, I. M. Robertson

Materials Science and Engineering Faculty Research & Creative Works

Creep behavior of metal matrix composites is similar to dispersion strengthen alloys and characterized by the presence of a threshold stress below which the creep rate is negligible. This threshold stress is attributed, at least in dispersion-strengthened alloys, to dislocation particle interactions in which the detachment of the dislocations from the particle is the rate-limiting step. Creep experiments were performed on an Al-5Y₂O₃-10SiC composite in the temperature range of 473 and 573 K and the nature of the dislocation-particle interaction was determined by performing in situ straining experiments at elevated temperature in a transmission electron microscope. …

A Risk Analysis Of Stevedoring Operations In Seaport Container Terminals, Kuo-Chung Shang, Wen-Jui Tseng

Journal of Marine Science and Technology–Taiwan

This research is a study of container terminals in Kaohsiung Harbor and investigates risk management in the loading and unloading of container terminals. The study shows that the top three factors associated with severity of accident risk are: “Moving the crane without raising the lifting arm of the gantry crane, resulting in damage to the pilot’s compartment,” “Transferring containers direct to the trailers,” and, “As a result of climatic factors (typhoons), the facility takes no action to prevent collisions.” The top three factors associated with frequency of accident risk are, “Ships go by and waves cause a declined-body, raised prow …

The Effects Of The Cross-Sectional Area And Aspect Ratio Of Beams On A Laminar Channel Flow, Hai-Ping Hu, Rong-Hua Yeh

Journal of Marine Science and Technology–Taiwan

The study analyzed the fully developed laminar flow in a channel with longitudinal rectangular beams arrayed along the channel width. The governing equations describing the fluid which flows along the direction of the beam length are expressed with double Poisson equations and are solved by eigenfunction-expansion and point-match method. The effects of cross-sectional area and aspect ratio of the beams are investigated. Dimensionless velocity profile, mean velocity, and friction factor multiplied by Reynolds number in the channel are presented for analysis. Initially, a comparison of fRe for a special case is made. It is found that the predicted fRe of …

A Delay-Dependent Approach To Robust Stability For Uncertain Hybrid Bidirectional Associative Memory Neural Networks With Time-Varying Delays, Chien-Yu Lu, Koan-Yuh Chang, Hsun-Heng Tsai, Wen-Jer Chang

Journal of Marine Science and Technology–Taiwan

This paper performs a global robust stability analysis of a particular class of hybrid bidirectional associative memory time-varying delayed neural network with norm-bounded timevarying parameter uncertainties. The activation functions are assumed to be globally Lipschitz continuous. Globally delay-dependent robust stability criteria are derived in the form of linear matrix inequalities by introducing relaxation matrices which, when chosen properly, produce a less conservative result. Two numerical examples are given to illustrate the significant improvement obtained in the conservativeness of the delay bound.

On Design Of Browser-Oriented Data Extraction System And The Plug-Ins, Jui-Yuan Su, Der-Johng Sun, I-Chen Wu, Lung-Pin Chen

Journal of Marine Science and Technology–Taiwan

Web data extraction systems currently not only extract data on web pages but also need to navigate to the target correctly. Most traditional web data extraction systems extract URLs directly from web pages, and then access next pages using the extracted URLs. This data extraction approach is herein called the URL-oriented data extraction approach in this paper. However, currently, more and more web pages use script functions, such as JavaScript, to access next pages and may hide URLs inside these functions, making it difficult to extract URLs. In order to solve this problem, a new data extraction approach, named the …

Robust Control For Coaxial Two-Wheeled Electric Vehicle, Jia-Sheng Hu, Mi-Ching Tsai, Feng-Rung Hu, Yoichi Hori

Journal of Marine Science and Technology–Taiwan

This paper investigates robust motion pilot control of a coaxial two-wheeled electric vehicle (CTWEV) where the feedback control system is solely based on the angle of inclination without using any velocity information. H∞ control is employed to design a robust stabilizing controller. The proposed scheme involves an electronic differential steering algorithm to pilot the CTWEV via a joystick. Finally, evaluation examples and simulations are provided to demonstrate the effectiveness of the system

Ahp Model For The Container Port Choice In The Multiple-Ports Region, Chien-Chang Chou

Journal of Marine Science and Technology–Taiwan

In this paper, a theoretical analysis of the effect of surface roughness on the lubrication characteristics of inclined stepped composite bearings with micropolar fluid is examined. A generalized form of surface roughness is mathematically modeled by a stochastic random variable with non-zero mean, variance and skewness. The generalized average Reynolds type equation is derived for the rough inclined stepped composite bearings with micropolar fluid. The closed form expressions are obtained for the fluid film pressure, load carrying capacity, frictional force. These expressions can be utilized to obtain the performance characteristics of four different types of bearing system viz; rough plane …

Fabrication Of Microneedles, Yu-Tang Chen, Chin-Chun Hsu, Chieh-Hsiu Tsai, Shung-Wen Kang

Journal of Marine Science and Technology–Taiwan

This research utilizes two kinds of materials to fabricate the ideal shape of microneedles, polymer microneedles and silicon microneedles, with 236 µm and 350 µm in height respectively. First, we utilize the turning model technique to fabricate the polymer microneedles. The silicon wafer with V-groove is used as the model and the SU-8 2050 is the main material of microneedles. In addition, we also use the silicon as the material and adopt the wet-etching technology to make the silicon microneedles. By the characteristics of anisotropic etching and undercut, the silicon wafer will have the fast-etching plane and form the shape …

Wall Transpiration Effects On Developing Mixed Convection Heat Transfer In Inclined Rectangular Ducts, Jer-Huan Jang, Han-Chieh Chiu, Wei-Mon Yan

Journal of Marine Science and Technology–Taiwan

The developing mixed convection heat transfer in inclined rectangular ducts with wall transpiration effects has been investigated numerically in detail. The three-dimensional Navier-Stokes equations and energy equation are solved simultaneously with the vorticity- velocity method. For a given combination of governing parameters wall Reynolds number, Rew, aspect ratio γ, modified Rayleigh number, Ra* , and mixed convection parameter, Ω, the solution is evaluated by a marching technique. The effects of wall transpiration and the inclination angle on the distributions of the bulk fluid temperature, the local averaged friction factor and Nusselt number are emphasized in detail. Both conditions of uniform …

Novel Algorithms For Tracking Multiple Targets, Sheng-Yun Hou, Hsien-Sen Hung, Shun-Hsyung Chang, Jeng-Cheng Liu

Journal of Marine Science and Technology–Taiwan

In this paper, two novel angle tracking algorithms are proposed for tracking multiple targets using an array of sensors with known locations. First, we present an extended Kalman particle filter (EKPF) which is capable of determining the direction-of-arrival (DOA) angles using a single snapshot of data during the interval between each time step. The proposed EKPF algorithm combines particle filtering with the extended Kalman filter (EKF) in order to prevent sample impoverishment during its resampling process. Next, we present a robust Kalman filter (RKF) tracking algorithm intended to improve tracking success rates of other existing algorithms for the case of …

Strain Analysis Of Vapor Chamber Heat Spreaders, Yu-Hsun Hung, Shung-Wen Kang, Wan-Chun Tsai

Journal of Marine Science and Technology–Taiwan

Vapor chamber is a cooling device with phase change phenomena. It not only provides high heat transfer coefficient but also removes hot spot. During working of vapor chamber, the buckle force and vapor pressure could lead to deformation. It is a popular way that pillars are set up to reduce deformation. This paper presents a three-dimensional finite element analysis for the vapor chamber by ANSYS software program. Four pillars with two kinds of designs are built into vapor core in order to avoid deformation of the vapor chamber. The results appear that pillars inside vapor chamber are good to reduce …

Simultaneous Measurement Of Deformation And Temperature Of High-Strength Concrete At Very Early Age To Determine The Initial And The Finial Setting Time, Shu-Ken Lin, Chung-Ho Huang, Chao-Shun Chang, Tsong Yen, Chung-Hao Wu, Yiching Lin

Journal of Marine Science and Technology–Taiwan

The interior shrinkage deformation and temperature change of high-strength concrete (HSC) at very early age, i.e., the first 24 h from casting, and up to an age of 72 h was investigated experimentally using optic fibre sensors (SOFO) and thermally sensitive resistors. The initial and the final setting times of HSC were also investigated. Results show that two turning points (I and II) on the development curve of deformation, both represent the onsets of the variation of rigidity in fresh HSC, can be recognized as the initial and the final setting times, which are evaluated around 4.5 h to 5.7 …

Global Exponential Stability Criteria For Switched Neutral Systems With Interval Time-Varying Delay, Ker-Wei Yu

Journal of Marine Science and Technology–Taiwan

The delay-dependent and delay-independent conditions are proposed to guarantee the global exponential stability for uncertain switched neutral system with interval time-varying state delay. New additional nonnegative inequalities are introduced to improve the conservativeness of system. Razumikhinlike approach is used to prove the exponential stability for system. Structured and unstructured uncertainties are investigated in this paper. The solving schemes based on Linear Matrix Inequality (LMI) approach along with the selective examples are presented to demonstrate the improvements achieved.

Estimation Of Manning Roughness Coefficients On Precast Ecological Concrete Blocks, Te-Hsing Chang, Shen-Ting Huang, Shinne Chen, Jun-Cheng Lai

Journal of Marine Science and Technology–Taiwan

Agricultural irrigation and drainage canals in Taiwan are generally constructed using concrete. Concrete is used for the safety of conveyance efficiency. It also reduced loss and is structurally safe. The irrigation ditches and soil revetments in Taiwan fitted with a strong concrete lining. The smooth nonporous concrete surface makes the biology perch difficult and causes a monotonous flow. For these reason, an artificial materials-precast ecological concrete blocks (PECBs) was developed in this research. This was done in order to modify both the traditional concrete lining and the natural field materials in canal construction. Precast ecological concrete blocks (PECBs) were tested …

Siding Attachment To Cold-Formed Steel Walls Through Varying Layers Of Foam Insulation, Newport Ventures, Inc., Applied Residential Engineering Services

CCFSS Library (1939 - present)

When insulating an exterior wall, more and more codes are requiring continuous insulation on the exterior of the studs to reduce the effect of thermal bridging. As energy codes continue to become more stringent, the thickness of the continuous installation has increased. Although wood and steel are both impacted, the requirements generally are higher for steel framing.

A significant implementation challenge caused by increasingly higher levels of continuous insulation is the lack of specifications for the type of fastener and siding installation details that should be used when installing thicker levels of insulation. Thus, the engineer, architect, builder, and contractor …

Role Of Faculty In Promoting Lifelong Learning: Characterizing Classroom Environments, Susan M. Lord, John Chen, Katharyn E. K. Nottis, Candice Stefanou, Michael J. Prince, Jonathon Stolk

Mechanical Engineering

Calls for educational reform emphasize the need for student-centered learning approaches that foster lifelong learning. To be a lifelong learner includes characteristics consistent with those of self-directed learners, such as being curious, motivated, reflective, analytical, persistent, flexible, and independent. Educational research has shown that the building of these aptitudes involves a complex interplay among nearly every aspect of human development. Instructor support of students’ self-directed learning (SDL) development relies on understanding and balancing these factors in the classroom. Engineering educators play a critical role in influencing outcomes related to SDL through their design of courses that support students’ transitions from …

Field Evaluation Of Asphalt Overlays On State Route 30 In Northern Utah, Mark J. Butler

Theses and Dissertations

The purpose of this research was to compare the rutting, cracking, and development of roughness of two asphalt overlay types commonly used in northern Utah and to evaluate how well the Mechanistic-Empirical Pavement Design Guide (MEPDG) can predict the observed results. AC-10 and PG 64-34 asphalt overlay materials were paved in a checkerboard pattern at a test site on State Route 30 near Logan, Utah, and observed for 3 years at 6-month intervals. Primary data included rutting, cracking, and roughness. At the conclusion of the 3-year evaluation period, rut depths were 0.08 in. deeper, on average, in the AC-10 overlay …

Multiphase Interleaving Buck Converter With Input-Output Bypass Capacitor, Taufik, Randyco Prasetyo, Arief Hernadi, Dodi Garinto

Electrical Engineering

As the number of transistors in microprocessors increases per Moore's Law their power requirement increases accordingly. This poses design challenges for their power supply module especially when microprocessors operate at sub voltage range. This paper presents a new multiphase topology that addresses these challenges. Laboratory tests on a hardware prototype of the topology shows improved performance compared to a commercially available power supply module.

An Investigation Of Wavelets, Wendy Bergh

Honors Capstones

Capstone submitted as a graduation requirement for the BSU Honors Program.

Personal Fall Protection: A Look At The Differences Among Industries, Nathan Miller

College of Engineering Poster Presentations

Fall prevention and protection is a mandatory part of nearly every type of construction. This project took a closer look at the fall protection equipment used in the construction industry relative to the equipment used in other industries. These industries include high rise window washing, rock climbing, utility lineman, and tree trimming. All of these industries rely on some form of fall protection and the equipment used varies per each unique application. In the construction industry, falls are the highest ranked cause of injury and account for roughly one third of all construction fatalities annually. A closer look at the …

Energy Modeling Using Feed-Forward Artificial Neural Networks, Dustyn Deakins

College of Engineering Poster Presentations

Buildings are responsible for over half the energy use in this country. Building energy use can be reduced by a few actions and one is energy conservation. This can be accomplished by knowing what the building energy use is currently and even better is what the energy use is going to be tomorrow, or next month, or even next year. By use of building energy models this will help monitor performance to ensure buildings are operating at peak performance and yield non-HVAC energy use. There has been many studies in this area and one of the many that have been …

Process Development For Advanced Complex Nuclear Oxide Fuels, Richard Reavis, Daniel Osterberg

College of Engineering Poster Presentations

Oxide nuclear fuel processing has the ability to convert long-lived actinide waste into short-lived fission products through fast reactors. Research is needed to improve the overall efficiency of this process to ensure it is a viable and sustainable option. Boise State University (BSU) worked in collaboration with others to synthesize, consolidate, and characterize complex surrogate oxide systems for use as advanced nuclear fuels. The objective of this work was to demonstrate the atmosphere affects on the final composition and density of the final fuel. The scope of this work included the identification of surrogate fuel compositions (target fuels, mixed oxide …

Shielded Cold Cathode Magnetron (Sccm), Tyler Rowe, Geoff Groff, Sonya Shawver, Brandon Wells

College of Engineering Poster Presentations

A magnetron is a vacuum device that uses the interaction of electrons and an electric field to generate microwaves. Magnetrons are often used for radar systems. Current magnetrons create electrons by heating a tungsten wire to the point that it emits electrons. These systems waste large amounts of energy and are difficult to control. A shielded cold cathode magnetron is a new magnetron design that has the potential to greatly improve the magnetron’s efficiency. These new magnetrons utilize arrays of gated field emitters to inject the electrons into the electric field. These field emitters must be protected from electron bombardment …

Rooftop Ventilator Senior Design Project, Gavin Moody, Nick Thompson, Jon Flack

College of Engineering Poster Presentations

The purpose of this research was to explore the energy savings between passive and active ventilation techniques and explore the feasability of a hybrid solar ventilator. The methodology that was employed for this research involved fluid flow analysis, thermal and heat transfer analysis and system modeling and controls. Additionally, machine design skills such as stress, failure and fatigue analysis were employed to ensure the longevity of the final design. Results can be placed into two categories. First, annual savings in terms of energy consumption for active versus passive ventilation will be displayed for various geographical areas. Second, a hybrid solar …

War Eagle Shopping Center, Megan Kautz, Jonathan Rocha, Peter Mckenzie, Clemente Salinas, David Mclenna

College of Engineering Poster Presentations

This senior design project is for the development of the War Eagle Shopping Center in Elmore county, Idaho. The shopping center is a part of the Elmore County comprehensive growth and development plan. The shopping center will be placed on 1,120 acres of land that is located fifteen miles northwest of Mountain Home, west of Interstate 84 and east of Simco Road. Our team will determine the required environmental and building permits, design the access and egress roadways, perform a nutrient pathogen study, design a wastewater treatment system, water supply systems, and a structure that includes two anchor stores, three …